Physics implication from higher weak isospin decomposition

Phung Van Dong; Duong Van Loi

doi:10.1140/epjc/s10052-023-11886-0

2023 Impact factor 4.2

Particles and Fields

Open Access

Eur. Phys. J. C (2023) 83: 703
https://doi.org/10.1140/epjc/s10052-023-11886-0

Regular Article - Theoretical Physics

Physics implication from higher weak isospin decomposition

Phung Van Dong^a and Duong Van Loi

Phenikaa Institute for Advanced Study and Faculty of Basic Science, Phenikaa University, Yen Nghia, 100000, Ha Dong, Hanoi, Vietnam

^a dong.phungvan@phenikaa-uni.edu.vn

Received: 18 May 2023
Accepted: 30 July 2023
Published online: 7 August 2023

Abstract

The $S U {(3)}_{L} \otimes U {(1)}_{X}$ $SU(3)_L\otimes U(1)_X$ symmetry actually studied is directly broken to the electroweak symmetry $S U {(2)}_{L} \otimes U {(1)}_{Y}$ $SU(2)_L\otimes U(1)_Y$ by a Higgs triplet, predicting a relevant new physics at TeV scale. This work argues, by contrast, that the higher weak isospin $S U {(3)}_{L}$ $$SU(3)_L$$ might be broken at a high energy scale, much beyond 1 TeV, by a Higgs octet to an intermediate symmetry $S U {(2)}_{L} \otimes U {(1)}_{T_{8}}$ $SU(2)_L\otimes U(1)_{T_8}$ at TeV, before the latter $U {(1)}_{T_{8}}$ $U(1)_{T_8}$ recombined with $U {(1)}_{X}$ $$U(1)_X$$ defines (i.e., broken to) $U {(1)}_{Y}$ $$U(1)_Y$$ by a Higgs singlet. The new physics coupled to $S U {(3)}_{L}$ $$SU(3)_L$$ breaking phase is decoupled, whereas what remains is a novel family-nonuniversal abelian model, $U {(1)}_{T_{8}} \otimes U {(1)}_{X}$ $U(1)_{T_8}\otimes U(1)_X$ , significantly overhauling the standard model as well as yielding consistent results for neutrino mass, dark matter, W-mass anomaly, and FCNC, differently from the usual 3-3-1 model.

© The Author(s) 2023

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